An audio recording of former Rutgers assistant Eric Murdock obtained by The Chronicle of Higher Education shows Murdock fuming over the fact his contract was not renewed by the school last June—and providing a glimpse into why Murdock thinks that happened.

Murdock was a central player in Mike Rice’s physical and verbal abuse of players coming to light, as he provided tapes to ESPN about the abuse, The Star-Ledger reported. The video led to Rice being fired by the school this past April after the school had only decided to fine and suspend him when the allegations came to light in December.

In Murdock’s recorded remarks, which were primarily directed at Rutgers associate head coach David Cox, Murdock called Rice a slave driver. The most interesting comments come after the 6:00 mark. WARNING: The recording includes multiple profanities.

“Treating (expletive) like slaves, just cracking the whip? That’s all you’re doing is cracking the whip,” Murdock fumed on the recording. “And when the (expletive) can’t deliver, you cut off his toe like (expletive) Kunta Kinte.”

Murdock has a wrongful termination lawsuit that alleges he was fired for being a whistleblower, but he does not make a direct correlation to that on the tape. Rather, he said his contract was not renewed because he left a Rice-led basketball camp to speak at one his son was attending. That’s what the school maintains following its investigation of the incident, The Chronicle notes.

Meanwhile, Murdock’s $950,000 lawsuit is still ongoing. The New York Times reported earlier this year that the FBI was investigating Murdock for extortion, but the FBI would neither confirm nor deny that, according to the Chronicle.